I just received my SECOND Sapphire 7950 and am having the exact same issues with the HDMI video output. I'm running the HDMI from PC -> Pioneer Reciever -> TV. All I get is a screen full of motionless static...just fuzzy white. Oddly, the audio works fine. If I adjust arbitrary settings (deselect and option and reselect it) I will get it working 1 out of 30 tries.
Thinking it may be the receiver, I tried using my old Geforce 560ti and it worked flawlessly. Has anyone experienced this? Is there a setting I might be missing? I really don't want to have to pay AGAIN to return this thing, not to mention be out my new card for another month (Newegg doesn't give a damn about hurrying RMAs along).
Windows 7 64bit
Auzentech Forte 7.1
Receiver - Pioneer VSX1022
TV - Panasonic Viera TC-L55e50